ROCHESTER — The Somersworth woman who was struck by a vehicle on North Main Street that fled the scene Thursday remained at Maine Medical Center on Friday, after being airlifted there with serious injuries after the accident.

Police continue to search for the driver of the vehicle that struck Katherine Littlefield, 25, of Somersworth, as she was crossing North Main Street in a crosswalk around 5:52 p.m. Thursday. After the accident, which occurred near the Pine Street intersection, the vehicle — described as a black Nissan Pathfinder — fled the scene, police say.

Police Capt. Paul Toussaint said that the vehicle reportedly fled south on North Main Street after the accident. The driver is believed to be a white male.

He said there several witnesses to the accident, and while police have information on the vehicle, officers are still looking for any information about the driver and any passengers.

“It's a busy street, it was a very busy part of the day, we know many people saw this,” said Toussaint.

After the accident, Littlefield was transported by Frisbie Memorial Hospital paramedics to Skyhaven Airport. From there, she was flown by helicopter to Maine Medical Center. Staff at Maine Medical Center said Friday that Littlefield is still being treated there.

Toussaint said that the victim's injuries are considered serious but non-life-threatening. Fire Capt. Mark Avery said Thursday that her legs were injured in the accident.

North Main Street was closed for about 30 minutes after the accident, as police investigated the scene and Littlefield was being treated by EMS staff.

The incident remains under investigation.

Police ask that anyone who with information about this case to call Officer Kusneirz at the Rochester Police Department at 330-7128. Those with information can also give tips and remain anonymous by calling the Rochester Crimeline at 335-6500 or send a text message to: CRIMES (274637), and in the body of the text write: TEXT4CASH + the tip. Cash rewards are offered for information that leads to an arrest.